replying to Christian McArdle, Vince wrote:
Herringbone is superior in every respect:
1. Lighter (less dead load) 2. Cheaper (less wood) 3. Easier to install (less
cutting, less precision required) 4. Easier to run cables/pipework. 5. Less
susceptible to expansion/contraction.
Christian.

I absolutely agree christian, I believe they work as racking strut far more
than a full depth timber strut, Ive had many complaints in the past of full
depth struts causing squeaking, this is mainly due to caps that can occur in
wide timber, the herringbone rules this out completely as its fitted tightly
from top to bottom and vice versa, its a no brainer

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